/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:10:41,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:10:41,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:10:41,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:10:41,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:10:41,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:10:41,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:10:41,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:10:41,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:10:41,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:10:41,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:10:41,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:10:41,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:10:41,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:10:41,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:10:41,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:10:41,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:10:41,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:10:41,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:10:41,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:10:41,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:10:41,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:10:41,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:10:41,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:10:41,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:10:41,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:10:41,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:10:41,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:10:41,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:10:41,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:10:41,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:10:41,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:10:41,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:10:41,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:10:41,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:10:41,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:10:41,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:10:41,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:10:41,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:10:41,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:10:41,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:10:41,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:10:41,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:10:41,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:10:41,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:10:41,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:10:41,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:10:41,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:10:41,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:10:41,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:10:41,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:10:41,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:10:41,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:10:41,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:10:41,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:10:41,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:10:41,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:10:41,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:10:41,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:10:41,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:10:41,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:10:41,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:10:41,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:10:41,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:10:41,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:10:41,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:10:41,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:10:41,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:10:41,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:10:41,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:10:41,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:10:41,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:10:41,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:10:41,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:10:41,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:10:41,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:10:41,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:10:41,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c [2020-10-13 23:10:41,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a4073ef/2c1ee52207db457c9836102f472b1768/FLAGdd5c408c4 [2020-10-13 23:10:42,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:10:42,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c [2020-10-13 23:10:42,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a4073ef/2c1ee52207db457c9836102f472b1768/FLAGdd5c408c4 [2020-10-13 23:10:42,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a4073ef/2c1ee52207db457c9836102f472b1768 [2020-10-13 23:10:42,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:10:42,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:10:42,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:10:42,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:10:42,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:10:42,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c96c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42, skipping insertion in model container [2020-10-13 23:10:42,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:10:42,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:10:42,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:10:42,899 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:10:42,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:10:42,943 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:10:42,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42 WrapperNode [2020-10-13 23:10:42,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:10:42,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:10:42,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:10:42,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:10:43,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:10:43,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:10:43,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:10:43,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:10:43,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:10:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:10:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:10:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:10:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:10:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:10:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:10:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:10:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:10:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:10:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:10:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:10:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:10:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:10:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:10:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:10:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:10:43,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:10:43,369 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 23:10:43,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:43 BoogieIcfgContainer [2020-10-13 23:10:43,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:10:43,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:10:43,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:10:43,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:10:43,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:10:42" (1/3) ... [2020-10-13 23:10:43,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364b35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:43, skipping insertion in model container [2020-10-13 23:10:43,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (2/3) ... [2020-10-13 23:10:43,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364b35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:43, skipping insertion in model container [2020-10-13 23:10:43,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:43" (3/3) ... [2020-10-13 23:10:43,382 INFO L109 eAbstractionObserver]: Analyzing ICFG array_tripl_access_init_const.c [2020-10-13 23:10:43,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:10:43,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:10:43,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:10:43,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:10:43,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:10:43,501 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:10:43,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:10:43,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:10:43,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:10:43,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:10:43,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:10:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-13 23:10:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 23:10:43,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:43,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:43,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:43,555 INFO L82 PathProgramCache]: Analyzing trace with hash 48820346, now seen corresponding path program 1 times [2020-10-13 23:10:43,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:43,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382292670] [2020-10-13 23:10:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:43,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:43,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:43,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 23:10:43,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 23:10:43,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:43,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:10:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:10:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:43,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:43,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:43,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:10:43,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:43,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:43,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382292670] [2020-10-13 23:10:43,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:10:43,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:10:43,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433317849] [2020-10-13 23:10:43,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:10:43,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:43,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:10:43,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:10:43,941 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-13 23:10:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:44,046 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-13 23:10:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:10:44,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-13 23:10:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:44,057 INFO L225 Difference]: With dead ends: 42 [2020-10-13 23:10:44,057 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 23:10:44,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:10:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 23:10:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-13 23:10:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-13 23:10:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-13 23:10:44,107 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-10-13 23:10:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:44,108 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-13 23:10:44,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:10:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-13 23:10:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:10:44,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:44,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:44,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:10:44,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash -298336104, now seen corresponding path program 1 times [2020-10-13 23:10:44,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:44,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866475775] [2020-10-13 23:10:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:10:44,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-13 23:10:44,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:10:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:10:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:10:44,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:10:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:10:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:44,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866475775] [2020-10-13 23:10:44,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:44,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:10:44,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118177689] [2020-10-13 23:10:44,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:10:44,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:44,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:10:44,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:10:44,684 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-10-13 23:10:44,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:44,779 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-13 23:10:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:10:44,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-13 23:10:44,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:44,781 INFO L225 Difference]: With dead ends: 34 [2020-10-13 23:10:44,781 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 23:10:44,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:10:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 23:10:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-13 23:10:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 23:10:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-13 23:10:44,789 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-10-13 23:10:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:44,790 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-13 23:10:44,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:10:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-13 23:10:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 23:10:44,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:44,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:44,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:10:44,792 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1091764534, now seen corresponding path program 2 times [2020-10-13 23:10:44,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:44,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956176211] [2020-10-13 23:10:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 23:10:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 23:10:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:10:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:45,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956176211] [2020-10-13 23:10:45,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:45,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:10:45,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021366586] [2020-10-13 23:10:45,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:10:45,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:45,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:10:45,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:10:45,163 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-10-13 23:10:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:45,241 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-13 23:10:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:10:45,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-13 23:10:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:45,243 INFO L225 Difference]: With dead ends: 36 [2020-10-13 23:10:45,243 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:10:45,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:10:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:10:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-13 23:10:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 23:10:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-13 23:10:45,250 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2020-10-13 23:10:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:45,251 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-13 23:10:45,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:10:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-13 23:10:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 23:10:45,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:45,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:45,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:10:45,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1243648596, now seen corresponding path program 3 times [2020-10-13 23:10:45,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:45,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760323333] [2020-10-13 23:10:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 23:10:45,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:45,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-13 23:10:45,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:10:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:10:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:45,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:45,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:45,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:45,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760323333] [2020-10-13 23:10:45,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:45,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:10:45,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221660034] [2020-10-13 23:10:45,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:10:45,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:10:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:10:45,807 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-10-13 23:10:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:45,885 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-13 23:10:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:10:45,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-13 23:10:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:45,887 INFO L225 Difference]: With dead ends: 38 [2020-10-13 23:10:45,887 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:10:45,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:10:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:10:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-13 23:10:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:10:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-13 23:10:45,894 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-10-13 23:10:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:45,894 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-13 23:10:45,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:10:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-13 23:10:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:10:45,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:45,896 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:45,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:10:45,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:45,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1175344114, now seen corresponding path program 4 times [2020-10-13 23:10:45,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:45,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991034841] [2020-10-13 23:10:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:46,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 23:10:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-13 23:10:46,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:46,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:10:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:10:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:46,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:46,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:46,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:46,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:46,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991034841] [2020-10-13 23:10:46,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:46,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:10:46,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928214102] [2020-10-13 23:10:46,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:10:46,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:46,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:10:46,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:10:46,520 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 8 states. [2020-10-13 23:10:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:46,644 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-13 23:10:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:10:46,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-13 23:10:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:46,647 INFO L225 Difference]: With dead ends: 40 [2020-10-13 23:10:46,647 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:10:46,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:10:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:10:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:10:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:10:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-13 23:10:46,655 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2020-10-13 23:10:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:46,655 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-13 23:10:46,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:10:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-13 23:10:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 23:10:46,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:46,657 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:46,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:10:46,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:46,659 INFO L82 PathProgramCache]: Analyzing trace with hash -40753648, now seen corresponding path program 5 times [2020-10-13 23:10:46,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:46,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746238730] [2020-10-13 23:10:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:47,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:10:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-13 23:10:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:47,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:10:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:10:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:47,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:47,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:47,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746238730] [2020-10-13 23:10:47,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:47,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:10:47,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448753743] [2020-10-13 23:10:47,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:10:47,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:47,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:10:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:10:47,504 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-10-13 23:10:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:47,630 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-13 23:10:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:10:47,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-13 23:10:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:47,632 INFO L225 Difference]: With dead ends: 42 [2020-10-13 23:10:47,632 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 23:10:47,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:10:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 23:10:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-13 23:10:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 23:10:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-13 23:10:47,639 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 23 [2020-10-13 23:10:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:47,639 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-13 23:10:47,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:10:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-13 23:10:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 23:10:47,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:47,641 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:47,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:10:47,641 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:47,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:47,642 INFO L82 PathProgramCache]: Analyzing trace with hash -479598418, now seen corresponding path program 6 times [2020-10-13 23:10:47,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:47,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43968465] [2020-10-13 23:10:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 23:10:48,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-13 23:10:48,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:10:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:10:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:10:48,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:48,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:48,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:48,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43968465] [2020-10-13 23:10:48,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:48,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:10:48,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702723081] [2020-10-13 23:10:48,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:10:48,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:48,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:10:48,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:10:48,705 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2020-10-13 23:10:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:48,826 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-10-13 23:10:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:10:48,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-13 23:10:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:48,827 INFO L225 Difference]: With dead ends: 44 [2020-10-13 23:10:48,827 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:10:48,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:10:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:10:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-13 23:10:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:10:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-13 23:10:48,834 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-10-13 23:10:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:48,834 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-13 23:10:48,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:10:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-13 23:10:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 23:10:48,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:48,836 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:48,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:10:48,836 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:48,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1302627380, now seen corresponding path program 7 times [2020-10-13 23:10:48,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:48,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954322274] [2020-10-13 23:10:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:50,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 23:10:50,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1937 [2020-10-13 23:10:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:50,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:10:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:10:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:50,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:10:50,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954322274] [2020-10-13 23:10:50,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:50,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:10:50,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041808646] [2020-10-13 23:10:50,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:10:50,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:10:50,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:10:50,945 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 11 states. [2020-10-13 23:10:51,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:51,089 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-13 23:10:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:10:51,090 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-13 23:10:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:51,091 INFO L225 Difference]: With dead ends: 46 [2020-10-13 23:10:51,091 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 23:10:51,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:10:51,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 23:10:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-13 23:10:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 23:10:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-13 23:10:51,098 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2020-10-13 23:10:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:51,099 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-13 23:10:51,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:10:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-13 23:10:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 23:10:51,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:51,100 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:51,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:10:51,101 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:51,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1959477398, now seen corresponding path program 8 times [2020-10-13 23:10:51,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:51,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799143881] [2020-10-13 23:10:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 23:10:52,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-13 23:10:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:10:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 23:10:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:52,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:52,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 23:10:52,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799143881] [2020-10-13 23:10:52,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:52,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:10:52,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325219265] [2020-10-13 23:10:52,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:10:52,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:52,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:10:52,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:10:52,777 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 9 states. [2020-10-13 23:10:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:53,023 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-10-13 23:10:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:10:53,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-13 23:10:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:53,025 INFO L225 Difference]: With dead ends: 44 [2020-10-13 23:10:53,025 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:10:53,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:10:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:10:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-13 23:10:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 23:10:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-10-13 23:10:53,034 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2020-10-13 23:10:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:53,034 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-10-13 23:10:53,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:10:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-10-13 23:10:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 23:10:53,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:53,036 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:53,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:10:53,037 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:53,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:53,037 INFO L82 PathProgramCache]: Analyzing trace with hash -542800991, now seen corresponding path program 1 times [2020-10-13 23:10:53,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:53,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726923042] [2020-10-13 23:10:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 23:10:55,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2532 [2020-10-13 23:10:55,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:10:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:10:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:55,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:10:55,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:10:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:55,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:55,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:10:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:55,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:10:55,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726923042] [2020-10-13 23:10:55,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:55,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:10:55,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451088996] [2020-10-13 23:10:55,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:10:55,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:55,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:10:55,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:10:55,717 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 12 states. [2020-10-13 23:10:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:55,833 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-13 23:10:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:10:55,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-13 23:10:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:55,837 INFO L225 Difference]: With dead ends: 60 [2020-10-13 23:10:55,837 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 23:10:55,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:10:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 23:10:55,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-13 23:10:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 23:10:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-13 23:10:55,845 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 37 [2020-10-13 23:10:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:55,845 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-13 23:10:55,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:10:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-13 23:10:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 23:10:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:55,846 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:55,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:10:55,847 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -47359553, now seen corresponding path program 2 times [2020-10-13 23:10:55,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:55,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843863485] [2020-10-13 23:10:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:57,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 23:10:57,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-13 23:10:57,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:57,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:10:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:10:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:10:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:57,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:57,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:57,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:10:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:57,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:57,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:10:57,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:57,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:10:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-13 23:10:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:10:57,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843863485] [2020-10-13 23:10:57,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:57,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:10:57,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200113243] [2020-10-13 23:10:57,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:10:57,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:10:57,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:10:57,800 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 13 states. [2020-10-13 23:10:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:57,987 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-10-13 23:10:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:10:57,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-13 23:10:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:57,990 INFO L225 Difference]: With dead ends: 62 [2020-10-13 23:10:57,990 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 23:10:57,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:10:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 23:10:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-13 23:10:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:10:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-13 23:10:58,007 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 39 [2020-10-13 23:10:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:58,010 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-13 23:10:58,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:10:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-13 23:10:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:10:58,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:58,013 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:58,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:10:58,013 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash -669507491, now seen corresponding path program 3 times [2020-10-13 23:10:58,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:58,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825650961] [2020-10-13 23:10:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 23:11:00,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:00,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-10-13 23:11:00,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:11:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:11:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:11:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:00,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:11:00,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825650961] [2020-10-13 23:11:00,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:00,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:11:00,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978130092] [2020-10-13 23:11:00,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:11:00,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:00,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:11:00,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:11:00,298 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 14 states. [2020-10-13 23:11:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:00,450 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-13 23:11:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:11:00,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-13 23:11:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:00,452 INFO L225 Difference]: With dead ends: 64 [2020-10-13 23:11:00,452 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 23:11:00,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:11:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 23:11:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-13 23:11:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 23:11:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-13 23:11:00,465 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 41 [2020-10-13 23:11:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:00,468 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-13 23:11:00,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:11:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-13 23:11:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 23:11:00,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:00,470 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:00,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:11:00,470 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:00,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1553221765, now seen corresponding path program 4 times [2020-10-13 23:11:00,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:00,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783526717] [2020-10-13 23:11:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:02,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:02,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 23:11:02,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2220 [2020-10-13 23:11:02,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:02,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:11:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:02,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:11:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:02,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:02,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:02,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:11:02,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:02,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:11:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:11:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:02,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:02,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:02,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:11:02,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:02,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 23:11:02,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783526717] [2020-10-13 23:11:02,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:02,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:11:02,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286330254] [2020-10-13 23:11:02,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:11:02,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:02,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:11:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:11:02,927 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2020-10-13 23:11:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:03,154 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-10-13 23:11:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:11:03,155 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-13 23:11:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:03,156 INFO L225 Difference]: With dead ends: 58 [2020-10-13 23:11:03,156 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:11:03,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:11:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:11:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-13 23:11:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 23:11:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-13 23:11:03,173 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 43 [2020-10-13 23:11:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:03,173 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-13 23:11:03,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:11:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-13 23:11:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 23:11:03,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:03,175 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:03,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:11:03,176 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:03,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:03,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2047878478, now seen corresponding path program 5 times [2020-10-13 23:11:03,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:03,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433243129] [2020-10-13 23:11:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:05,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:11:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2714 [2020-10-13 23:11:05,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:05,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:11:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:11:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:06,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:06,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:06,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:06,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:06,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:06,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:11:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:06,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:06,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:06,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:11:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:06,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:06,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:06,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:06,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 4 proven. 121 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 23:11:06,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433243129] [2020-10-13 23:11:06,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:06,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:11:06,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003963812] [2020-10-13 23:11:06,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:11:06,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:06,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:11:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:11:06,116 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 15 states. [2020-10-13 23:11:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:06,297 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-13 23:11:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:11:06,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-13 23:11:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:06,298 INFO L225 Difference]: With dead ends: 82 [2020-10-13 23:11:06,298 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 23:11:06,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:11:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 23:11:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-13 23:11:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 23:11:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-10-13 23:11:06,311 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 51 [2020-10-13 23:11:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:06,315 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-10-13 23:11:06,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:11:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-10-13 23:11:06,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:11:06,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:06,317 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:06,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:11:06,317 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash -574643120, now seen corresponding path program 6 times [2020-10-13 23:11:06,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:06,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760437720] [2020-10-13 23:11:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:09,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:09,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 23:11:09,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2775 [2020-10-13 23:11:09,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:09,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:11:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:11:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:09,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:09,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:09,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:09,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:09,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:09,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:11:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:09,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:09,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:11:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:09,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:09,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:09,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 23:11:09,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760437720] [2020-10-13 23:11:09,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:09,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:11:09,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953223438] [2020-10-13 23:11:09,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:11:09,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:09,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:11:09,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:11:09,310 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 16 states. [2020-10-13 23:11:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:09,478 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2020-10-13 23:11:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:11:09,479 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-13 23:11:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:09,480 INFO L225 Difference]: With dead ends: 84 [2020-10-13 23:11:09,480 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 23:11:09,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:11:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 23:11:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-13 23:11:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 23:11:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-13 23:11:09,487 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 53 [2020-10-13 23:11:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:09,488 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-13 23:11:09,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:11:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-13 23:11:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 23:11:09,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:09,489 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:09,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:11:09,489 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:09,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2134671762, now seen corresponding path program 7 times [2020-10-13 23:11:09,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:09,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547633586] [2020-10-13 23:11:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:09,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4049 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 23:11:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:13,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:13,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:13,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:13,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:13,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:11:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:13,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:13,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:13,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:13,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:13,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:11:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:13,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:13,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:13,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:13,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-13 23:11:13,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547633586] [2020-10-13 23:11:13,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:13,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:11:13,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465026254] [2020-10-13 23:11:13,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:11:13,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:13,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:11:13,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:11:13,787 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 11 states. [2020-10-13 23:11:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:14,060 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-13 23:11:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:11:14,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-13 23:11:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:14,062 INFO L225 Difference]: With dead ends: 70 [2020-10-13 23:11:14,062 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:11:14,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:11:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:11:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-13 23:11:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 23:11:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-10-13 23:11:14,071 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 55 [2020-10-13 23:11:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:14,072 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-10-13 23:11:14,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:11:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-10-13 23:11:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 23:11:14,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:14,073 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:14,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:11:14,073 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:14,073 INFO L82 PathProgramCache]: Analyzing trace with hash -954794331, now seen corresponding path program 8 times [2020-10-13 23:11:14,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:14,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116214131] [2020-10-13 23:11:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2733 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:11:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:17,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:17,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:17,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:17,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:11:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:17,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:17,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:17,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:17,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:17,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:11:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:17,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:17,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:17,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:17,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:17,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:17,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:11:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:17,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:17,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:17,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:17,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 6 proven. 169 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:11:17,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116214131] [2020-10-13 23:11:17,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:17,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:11:17,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467916865] [2020-10-13 23:11:17,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:11:17,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:17,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:11:17,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:11:17,042 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 17 states. [2020-10-13 23:11:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:17,206 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-10-13 23:11:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:11:17,207 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-10-13 23:11:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:17,208 INFO L225 Difference]: With dead ends: 102 [2020-10-13 23:11:17,208 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 23:11:17,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:11:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 23:11:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-13 23:11:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 23:11:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-13 23:11:17,224 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 63 [2020-10-13 23:11:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:17,224 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-13 23:11:17,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:11:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-13 23:11:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 23:11:17,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:17,225 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:17,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:11:17,226 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash -178304189, now seen corresponding path program 9 times [2020-10-13 23:11:17,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:17,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676117752] [2020-10-13 23:11:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3438 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:11:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:20,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:20,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:20,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 23:11:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:20,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:20,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:20,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:11:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:20,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:20,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:20,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:20,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:11:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:20,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:20,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:20,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:20,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 6 proven. 196 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:11:20,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676117752] [2020-10-13 23:11:20,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:20,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:11:20,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593809908] [2020-10-13 23:11:20,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:11:20,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:20,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:11:20,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:11:20,900 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 18 states. [2020-10-13 23:11:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:21,088 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-10-13 23:11:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:11:21,089 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2020-10-13 23:11:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:21,090 INFO L225 Difference]: With dead ends: 104 [2020-10-13 23:11:21,090 INFO L226 Difference]: Without dead ends: 71 [2020-10-13 23:11:21,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:11:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-13 23:11:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-13 23:11:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 23:11:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-13 23:11:21,099 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 65 [2020-10-13 23:11:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:21,099 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-13 23:11:21,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:11:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-13 23:11:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 23:11:21,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:21,100 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:21,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:11:21,101 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:21,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1295587231, now seen corresponding path program 10 times [2020-10-13 23:11:21,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:21,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914324730] [2020-10-13 23:11:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:24,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3572 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:11:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:11:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:24,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 23:11:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:24,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:24,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:24,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:24,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:24,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:24,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:11:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:24,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:24,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:24,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 6 proven. 225 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:11:24,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914324730] [2020-10-13 23:11:24,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:24,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:11:24,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910541570] [2020-10-13 23:11:24,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:11:24,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:24,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:11:24,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:11:24,944 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 19 states. [2020-10-13 23:11:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:25,144 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-13 23:11:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:11:25,144 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-10-13 23:11:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:25,146 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:11:25,146 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 23:11:25,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:11:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 23:11:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-13 23:11:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 23:11:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-10-13 23:11:25,153 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 67 [2020-10-13 23:11:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:25,153 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-10-13 23:11:25,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:11:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-10-13 23:11:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:11:25,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:25,154 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:25,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:11:25,154 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:25,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1262766593, now seen corresponding path program 11 times [2020-10-13 23:11:25,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:25,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447733417] [2020-10-13 23:11:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:25,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:11:30,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:11:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:30,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:30,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:11:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:11:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:11:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 23:11:30,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447733417] [2020-10-13 23:11:30,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:30,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:11:30,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008162024] [2020-10-13 23:11:30,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:11:30,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:11:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:11:30,425 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 13 states. [2020-10-13 23:11:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:30,953 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-10-13 23:11:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:11:30,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-13 23:11:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:30,955 INFO L225 Difference]: With dead ends: 84 [2020-10-13 23:11:30,955 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:11:30,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:11:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:11:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-13 23:11:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 23:11:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-10-13 23:11:30,964 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 69 [2020-10-13 23:11:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:30,964 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-10-13 23:11:30,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:11:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-10-13 23:11:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 23:11:30,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:30,965 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:30,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:11:30,965 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash 833295670, now seen corresponding path program 12 times [2020-10-13 23:11:30,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:30,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325390987] [2020-10-13 23:11:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:11:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:36,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:11:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:36,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:36,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:36,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:36,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:11:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:36,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:36,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:36,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:36,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:11:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:11:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:36,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:36,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:36,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:36,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:11:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:36,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:36,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:36,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 8 proven. 256 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 23:11:36,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325390987] [2020-10-13 23:11:36,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:36,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:11:36,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265911630] [2020-10-13 23:11:36,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:11:36,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:36,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:11:36,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:11:36,314 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 20 states. [2020-10-13 23:11:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:36,529 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-10-13 23:11:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:11:36,529 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2020-10-13 23:11:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:36,530 INFO L225 Difference]: With dead ends: 124 [2020-10-13 23:11:36,531 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 23:11:36,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:11:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 23:11:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-13 23:11:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 23:11:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-10-13 23:11:36,545 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 77 [2020-10-13 23:11:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:36,546 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-10-13 23:11:36,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:11:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-10-13 23:11:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 23:11:36,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:36,548 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:36,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:11:36,548 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:36,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1525282132, now seen corresponding path program 13 times [2020-10-13 23:11:36,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:36,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575563682] [2020-10-13 23:11:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 23:11:41,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:11:41,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:11:41,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:41,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:11:41,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:41,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:11:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:11:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:11:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:11:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 8 proven. 289 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 23:11:41,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575563682] [2020-10-13 23:11:41,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:41,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:11:41,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682399630] [2020-10-13 23:11:41,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:11:41,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:11:41,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:11:41,913 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 21 states. [2020-10-13 23:11:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:42,083 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2020-10-13 23:11:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:11:42,086 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 79 [2020-10-13 23:11:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:42,087 INFO L225 Difference]: With dead ends: 126 [2020-10-13 23:11:42,088 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 23:11:42,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:11:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 23:11:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-13 23:11:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-13 23:11:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-10-13 23:11:42,095 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 79 [2020-10-13 23:11:42,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:42,096 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-10-13 23:11:42,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:11:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-10-13 23:11:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 23:11:42,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:42,097 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:42,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:11:42,097 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:42,098 INFO L82 PathProgramCache]: Analyzing trace with hash 804341234, now seen corresponding path program 14 times [2020-10-13 23:11:42,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:42,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333103471] [2020-10-13 23:11:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:42,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:47,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 23:11:47,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 23:11:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:47,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:47,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:47,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:11:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:47,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:47,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:47,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:47,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:47,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:11:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:47,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:11:47,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:47,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:11:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:47,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:47,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:47,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:47,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:47,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:47,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:11:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:47,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:47,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:47,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:47,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2020-10-13 23:11:47,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333103471] [2020-10-13 23:11:47,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:47,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:11:47,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076275786] [2020-10-13 23:11:47,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:11:47,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:47,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:11:47,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:11:47,456 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 14 states. [2020-10-13 23:11:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:48,014 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-10-13 23:11:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:11:48,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-13 23:11:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:48,015 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:11:48,015 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:11:48,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:11:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:11:48,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-13 23:11:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 23:11:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2020-10-13 23:11:48,026 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 81 [2020-10-13 23:11:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:48,026 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2020-10-13 23:11:48,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:11:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2020-10-13 23:11:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 23:11:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:48,027 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:48,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:11:48,027 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1630076375, now seen corresponding path program 15 times [2020-10-13 23:11:48,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:48,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037246600] [2020-10-13 23:11:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 23:11:53,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:53,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:11:53,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:11:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:11:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:53,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:53,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:11:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:53,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:53,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:11:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:53,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:53,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:11:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:11:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:53,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:53,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:53,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:11:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:53,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:53,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:53,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:53,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:53,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 10 proven. 324 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 23:11:53,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037246600] [2020-10-13 23:11:53,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:53,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:11:53,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616408243] [2020-10-13 23:11:53,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:11:53,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:53,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:11:53,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:11:53,370 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 22 states. [2020-10-13 23:11:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:53,544 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-10-13 23:11:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:11:53,544 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 89 [2020-10-13 23:11:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:53,546 INFO L225 Difference]: With dead ends: 144 [2020-10-13 23:11:53,546 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 23:11:53,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:11:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 23:11:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-13 23:11:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-13 23:11:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-10-13 23:11:53,555 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 89 [2020-10-13 23:11:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:53,556 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-10-13 23:11:53,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:11:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-10-13 23:11:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:11:53,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:53,557 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:53,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:11:53,557 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:53,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1948296519, now seen corresponding path program 16 times [2020-10-13 23:11:53,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:53,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800548308] [2020-10-13 23:11:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:11:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:11:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 23:11:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:11:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:58,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:58,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:58,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:11:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:58,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:58,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:11:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:11:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:58,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:11:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 10 proven. 361 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 23:11:58,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800548308] [2020-10-13 23:11:58,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:58,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:11:58,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693544359] [2020-10-13 23:11:58,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:11:58,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:58,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:11:58,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:11:58,934 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 23 states. [2020-10-13 23:11:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:59,124 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2020-10-13 23:11:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:11:59,125 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 91 [2020-10-13 23:11:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:59,127 INFO L225 Difference]: With dead ends: 146 [2020-10-13 23:11:59,127 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 23:11:59,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:11:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 23:11:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-13 23:11:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 23:11:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-10-13 23:11:59,136 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 91 [2020-10-13 23:11:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:59,137 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-10-13 23:11:59,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:11:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-10-13 23:11:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 23:11:59,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:59,138 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:59,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:11:59,139 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:59,139 INFO L82 PathProgramCache]: Analyzing trace with hash 495843557, now seen corresponding path program 17 times [2020-10-13 23:11:59,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:59,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930853195] [2020-10-13 23:11:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 23:12:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:04,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:04,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:04,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:12:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:04,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:04,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:04,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:12:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:12:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:12:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:04,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:12:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 10 proven. 400 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 23:12:04,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930853195] [2020-10-13 23:12:04,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:04,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:12:04,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790209890] [2020-10-13 23:12:04,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:12:04,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:04,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:12:04,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:12:04,525 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 24 states. [2020-10-13 23:12:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:04,761 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2020-10-13 23:12:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:12:04,762 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-10-13 23:12:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:04,763 INFO L225 Difference]: With dead ends: 148 [2020-10-13 23:12:04,763 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 23:12:04,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:12:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 23:12:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-13 23:12:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 23:12:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-10-13 23:12:04,772 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 93 [2020-10-13 23:12:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:04,774 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-10-13 23:12:04,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:12:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-10-13 23:12:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 23:12:04,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:04,775 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:04,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:12:04,776 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:04,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:04,776 INFO L82 PathProgramCache]: Analyzing trace with hash 552918275, now seen corresponding path program 18 times [2020-10-13 23:12:04,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:04,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163214679] [2020-10-13 23:12:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:09,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:09,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:12:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:12:09,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:09,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 23:12:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 23:12:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:10,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:12:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:12:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:12:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:12:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:12:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 10 proven. 111 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-13 23:12:10,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163214679] [2020-10-13 23:12:10,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:10,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:12:10,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638244887] [2020-10-13 23:12:10,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:12:10,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:12:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:12:10,213 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 15 states. [2020-10-13 23:12:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:10,931 INFO L93 Difference]: Finished difference Result 110 states and 111 transitions. [2020-10-13 23:12:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:12:10,931 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 95 [2020-10-13 23:12:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:10,933 INFO L225 Difference]: With dead ends: 110 [2020-10-13 23:12:10,933 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:12:10,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:12:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:12:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-13 23:12:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-13 23:12:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-13 23:12:10,943 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 95 [2020-10-13 23:12:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:10,943 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-13 23:12:10,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:12:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-13 23:12:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 23:12:10,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:10,945 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:10,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:12:10,945 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:10,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash 316602426, now seen corresponding path program 19 times [2020-10-13 23:12:10,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:10,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014794590] [2020-10-13 23:12:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:15,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:15,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 23:12:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:12:15,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:15,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:12:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:12:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:12:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:12:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:16,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:16,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:12:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:16,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:16,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:12:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:12:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:16,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:16,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:12:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:16,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:16,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 12 proven. 441 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-13 23:12:16,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014794590] [2020-10-13 23:12:16,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:16,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:12:16,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613612001] [2020-10-13 23:12:16,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:12:16,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:16,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:12:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:12:16,346 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 25 states. [2020-10-13 23:12:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:16,471 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2020-10-13 23:12:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:12:16,471 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 103 [2020-10-13 23:12:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:16,473 INFO L225 Difference]: With dead ends: 166 [2020-10-13 23:12:16,473 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 23:12:16,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:12:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 23:12:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-13 23:12:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-13 23:12:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2020-10-13 23:12:16,492 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 103 [2020-10-13 23:12:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:16,492 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2020-10-13 23:12:16,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:12:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2020-10-13 23:12:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 23:12:16,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:16,494 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:16,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:12:16,494 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:16,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1329213736, now seen corresponding path program 20 times [2020-10-13 23:12:16,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:16,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550820292] [2020-10-13 23:12:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:12:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 23:12:21,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:12:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:21,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:12:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:21,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:21,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:12:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:21,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:21,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:12:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:21,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:21,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:12:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:12:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 484 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-13 23:12:21,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550820292] [2020-10-13 23:12:21,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:21,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:12:21,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400545304] [2020-10-13 23:12:21,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:12:21,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:21,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:12:21,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:12:21,962 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 26 states. [2020-10-13 23:12:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:22,197 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2020-10-13 23:12:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:12:22,198 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2020-10-13 23:12:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:22,199 INFO L225 Difference]: With dead ends: 168 [2020-10-13 23:12:22,200 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 23:12:22,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:12:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 23:12:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-10-13 23:12:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 23:12:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-10-13 23:12:22,209 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 105 [2020-10-13 23:12:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:22,209 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-10-13 23:12:22,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:12:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-10-13 23:12:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 23:12:22,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:22,211 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:22,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:12:22,211 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1884386806, now seen corresponding path program 21 times [2020-10-13 23:12:22,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:22,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911090466] [2020-10-13 23:12:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 23:12:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:12:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:12:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 23:12:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:27,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:12:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:27,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:27,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:12:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:27,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:12:27,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:12:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:12:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:27,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:27,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:12:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:27,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:12:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:27,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:27,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:12:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:27,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:27,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:27,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:27,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:27,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 12 proven. 181 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-13 23:12:27,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911090466] [2020-10-13 23:12:27,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:27,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:12:27,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564026488] [2020-10-13 23:12:27,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:12:27,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:27,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:12:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:12:27,823 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 17 states. [2020-10-13 23:12:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:28,776 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2020-10-13 23:12:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:12:28,777 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-10-13 23:12:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:28,778 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:12:28,778 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 23:12:28,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:12:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 23:12:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-13 23:12:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 23:12:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-10-13 23:12:28,790 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 107 [2020-10-13 23:12:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:28,791 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-10-13 23:12:28,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:12:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-10-13 23:12:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 23:12:28,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:28,793 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:28,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:12:28,793 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:28,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1525092819, now seen corresponding path program 22 times [2020-10-13 23:12:28,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:28,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885495304] [2020-10-13 23:12:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:33,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:33,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 23:12:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:12:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:12:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 23:12:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:34,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:12:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:12:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:12:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:12:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:12:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:12:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:12:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:34,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:34,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 14 proven. 529 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-13 23:12:34,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885495304] [2020-10-13 23:12:34,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:34,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:12:34,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889680301] [2020-10-13 23:12:34,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:12:34,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:12:34,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:12:34,294 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 27 states. [2020-10-13 23:12:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:34,561 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2020-10-13 23:12:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:12:34,562 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 115 [2020-10-13 23:12:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:34,563 INFO L225 Difference]: With dead ends: 186 [2020-10-13 23:12:34,564 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 23:12:34,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:12:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 23:12:34,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2020-10-13 23:12:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 23:12:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2020-10-13 23:12:34,574 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 115 [2020-10-13 23:12:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:34,575 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2020-10-13 23:12:34,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:12:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2020-10-13 23:12:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 23:12:34,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:34,576 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:34,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:12:34,577 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:34,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:34,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1447872459, now seen corresponding path program 23 times [2020-10-13 23:12:34,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:34,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582222251] [2020-10-13 23:12:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:39,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:12:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:12:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:12:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:40,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:12:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:12:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:12:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:12:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:12:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:40,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:40,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 14 proven. 576 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-13 23:12:40,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582222251] [2020-10-13 23:12:40,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:40,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:12:40,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111692420] [2020-10-13 23:12:40,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:12:40,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:40,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:12:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:12:40,134 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand 28 states. [2020-10-13 23:12:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:40,407 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2020-10-13 23:12:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:12:40,408 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 117 [2020-10-13 23:12:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:40,410 INFO L225 Difference]: With dead ends: 188 [2020-10-13 23:12:40,410 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 23:12:40,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:12:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 23:12:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2020-10-13 23:12:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 23:12:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-10-13 23:12:40,422 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2020-10-13 23:12:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:40,422 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-10-13 23:12:40,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:12:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-10-13 23:12:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 23:12:40,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:40,423 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:40,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:12:40,424 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1980714519, now seen corresponding path program 24 times [2020-10-13 23:12:40,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:40,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425358466] [2020-10-13 23:12:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 23:12:45,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:45,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:12:45,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:12:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 23:12:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:12:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:12:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:12:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:12:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:45,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:12:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:45,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:12:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:45,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:12:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:12:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:12:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:45,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:12:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 14 proven. 625 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-13 23:12:45,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425358466] [2020-10-13 23:12:45,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:45,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:12:45,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484605298] [2020-10-13 23:12:45,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:12:45,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:45,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:12:45,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:12:45,973 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 29 states. [2020-10-13 23:12:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:46,174 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2020-10-13 23:12:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:12:46,174 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-10-13 23:12:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:46,175 INFO L225 Difference]: With dead ends: 190 [2020-10-13 23:12:46,175 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 23:12:46,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:12:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 23:12:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-10-13 23:12:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-13 23:12:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-10-13 23:12:46,187 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 119 [2020-10-13 23:12:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:46,188 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-10-13 23:12:46,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:12:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-10-13 23:12:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 23:12:46,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:46,191 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:46,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:12:46,191 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1682082951, now seen corresponding path program 25 times [2020-10-13 23:12:46,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:46,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007984073] [2020-10-13 23:12:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 23:12:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:51,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:12:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:12:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:12:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:12:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:12:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:12:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:12:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 14 proven. 222 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2020-10-13 23:12:51,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007984073] [2020-10-13 23:12:51,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:51,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:12:51,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609828971] [2020-10-13 23:12:51,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:12:51,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:12:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:12:51,844 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 18 states. [2020-10-13 23:12:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:52,928 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2020-10-13 23:12:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:12:52,929 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 121 [2020-10-13 23:12:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:52,931 INFO L225 Difference]: With dead ends: 136 [2020-10-13 23:12:52,931 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 23:12:52,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:12:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 23:12:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-10-13 23:12:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 23:12:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2020-10-13 23:12:52,942 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 121 [2020-10-13 23:12:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:52,942 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2020-10-13 23:12:52,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:12:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2020-10-13 23:12:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 23:12:52,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:52,944 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:12:52,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:12:52,944 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:52,944 INFO L82 PathProgramCache]: Analyzing trace with hash -195632194, now seen corresponding path program 26 times [2020-10-13 23:12:52,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:52,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604552576] [2020-10-13 23:12:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:00,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:00,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 23:13:00,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:13:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7452 [2020-10-13 23:13:00,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:00,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:13:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 23:13:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:13:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:13:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:13:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:01,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:13:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:13:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:13:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:13:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:13:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:01,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 16 proven. 676 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-13 23:13:01,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604552576] [2020-10-13 23:13:01,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:01,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:13:01,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769774736] [2020-10-13 23:13:01,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:13:01,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:01,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:13:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:13:01,088 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 30 states. [2020-10-13 23:13:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:01,390 INFO L93 Difference]: Finished difference Result 208 states and 210 transitions. [2020-10-13 23:13:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:13:01,391 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 129 [2020-10-13 23:13:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:01,393 INFO L225 Difference]: With dead ends: 208 [2020-10-13 23:13:01,393 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 23:13:01,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:13:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 23:13:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-10-13 23:13:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 23:13:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-10-13 23:13:01,403 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 129 [2020-10-13 23:13:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:01,404 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-10-13 23:13:01,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:13:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-10-13 23:13:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 23:13:01,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:01,405 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:01,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:13:01,405 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2100916004, now seen corresponding path program 27 times [2020-10-13 23:13:01,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:01,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426895069] [2020-10-13 23:13:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 23:13:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:13:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7465 [2020-10-13 23:13:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:08,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:13:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:13:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:13:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:09,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:13:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:09,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:13:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:13:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:09,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:13:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:09,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:13:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:09,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 23:13:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:13:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:09,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:09,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:09,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 16 proven. 729 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-13 23:13:09,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426895069] [2020-10-13 23:13:09,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:09,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:13:09,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919512687] [2020-10-13 23:13:09,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:13:09,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:09,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:13:09,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:13:09,497 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 31 states. [2020-10-13 23:13:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:09,728 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2020-10-13 23:13:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:13:09,728 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 131 [2020-10-13 23:13:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:09,730 INFO L225 Difference]: With dead ends: 210 [2020-10-13 23:13:09,730 INFO L226 Difference]: Without dead ends: 137 [2020-10-13 23:13:09,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:13:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-13 23:13:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-10-13 23:13:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 23:13:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-10-13 23:13:09,741 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 131 [2020-10-13 23:13:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:09,741 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-10-13 23:13:09,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:13:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-10-13 23:13:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 23:13:09,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:09,742 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:09,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:13:09,743 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:09,743 INFO L82 PathProgramCache]: Analyzing trace with hash 872377978, now seen corresponding path program 28 times [2020-10-13 23:13:09,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:09,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642230211] [2020-10-13 23:13:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:09,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:17,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:17,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 23:13:17,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:13:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7805 [2020-10-13 23:13:17,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:17,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 23:13:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 23:13:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:18,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:13:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:18,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:13:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:13:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:18,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:13:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:13:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:13:18,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:13:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:18,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:13:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:13:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:13:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:18,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:18,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 16 proven. 262 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2020-10-13 23:13:18,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642230211] [2020-10-13 23:13:18,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:18,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:13:18,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674893808] [2020-10-13 23:13:18,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:13:18,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:18,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:13:18,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:13:18,670 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 19 states. [2020-10-13 23:13:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:20,215 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2020-10-13 23:13:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:13:20,215 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 133 [2020-10-13 23:13:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:20,217 INFO L225 Difference]: With dead ends: 148 [2020-10-13 23:13:20,217 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 23:13:20,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:13:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 23:13:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-13 23:13:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 23:13:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2020-10-13 23:13:20,233 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 133 [2020-10-13 23:13:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:20,233 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2020-10-13 23:13:20,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:13:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2020-10-13 23:13:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 23:13:20,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:20,235 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:20,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:13:20,235 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash 714613425, now seen corresponding path program 29 times [2020-10-13 23:13:20,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:20,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358859201] [2020-10-13 23:13:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:25,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:25,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:13:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:26,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:13:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:13:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:26,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:13:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:13:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:13:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:13:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:13:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:26,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:13:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:13:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:26,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 18 proven. 784 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:13:26,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358859201] [2020-10-13 23:13:26,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:26,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:13:26,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494922527] [2020-10-13 23:13:26,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:13:26,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:26,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:13:26,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:13:26,115 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 32 states. [2020-10-13 23:13:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:26,285 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2020-10-13 23:13:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 23:13:26,286 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 141 [2020-10-13 23:13:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:26,287 INFO L225 Difference]: With dead ends: 228 [2020-10-13 23:13:26,287 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 23:13:26,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:13:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 23:13:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-13 23:13:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 23:13:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-10-13 23:13:26,306 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 141 [2020-10-13 23:13:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:26,307 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-10-13 23:13:26,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:13:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-10-13 23:13:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 23:13:26,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:26,308 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:26,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:13:26,308 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:26,309 INFO L82 PathProgramCache]: Analyzing trace with hash 155652815, now seen corresponding path program 30 times [2020-10-13 23:13:26,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:26,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344398211] [2020-10-13 23:13:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:31,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:31,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 23:13:31,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5426 [2020-10-13 23:13:31,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:31,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 23:13:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:13:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:13:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:13:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:13:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:13:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:13:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:13:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:13:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:13:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:13:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:32,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:32,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:32,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 18 proven. 841 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:13:32,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344398211] [2020-10-13 23:13:32,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:32,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 23:13:32,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789549260] [2020-10-13 23:13:32,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 23:13:32,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:32,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 23:13:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:13:32,451 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 33 states. [2020-10-13 23:13:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:32,783 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2020-10-13 23:13:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 23:13:32,784 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 143 [2020-10-13 23:13:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:32,785 INFO L225 Difference]: With dead ends: 230 [2020-10-13 23:13:32,785 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 23:13:32,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:13:32,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 23:13:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-10-13 23:13:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 23:13:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-10-13 23:13:32,797 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 143 [2020-10-13 23:13:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:32,797 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-10-13 23:13:32,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 23:13:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-10-13 23:13:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 23:13:32,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:32,798 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:32,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:13:32,799 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:32,799 INFO L82 PathProgramCache]: Analyzing trace with hash -134581395, now seen corresponding path program 31 times [2020-10-13 23:13:32,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:32,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863395935] [2020-10-13 23:13:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 23:13:41,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:13:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8370 [2020-10-13 23:13:41,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 23:13:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:13:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:13:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:13:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:13:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:13:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:13:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:13:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:13:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:13:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:13:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 18 proven. 900 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:13:41,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863395935] [2020-10-13 23:13:41,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:41,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-13 23:13:41,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388871949] [2020-10-13 23:13:41,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-13 23:13:41,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-13 23:13:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:13:41,922 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 34 states. [2020-10-13 23:13:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:42,101 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-10-13 23:13:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 23:13:42,101 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 145 [2020-10-13 23:13:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:42,103 INFO L225 Difference]: With dead ends: 232 [2020-10-13 23:13:42,103 INFO L226 Difference]: Without dead ends: 151 [2020-10-13 23:13:42,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:13:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-13 23:13:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2020-10-13 23:13:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 23:13:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-10-13 23:13:42,112 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 145 [2020-10-13 23:13:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:42,113 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-10-13 23:13:42,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-13 23:13:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-10-13 23:13:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 23:13:42,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:42,113 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:42,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:13:42,114 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:42,114 INFO L82 PathProgramCache]: Analyzing trace with hash 123217035, now seen corresponding path program 32 times [2020-10-13 23:13:42,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:42,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608646867] [2020-10-13 23:13:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 23:13:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5352 [2020-10-13 23:13:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:47,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 23:13:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 23:13:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:13:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:13:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:13:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:48,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:13:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:13:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 23:13:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:13:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:13:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:13:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:48,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:48,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:48,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:48,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 18 proven. 961 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:13:48,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608646867] [2020-10-13 23:13:48,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:48,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 23:13:48,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451463742] [2020-10-13 23:13:48,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 23:13:48,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:48,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 23:13:48,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:13:48,229 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 35 states. [2020-10-13 23:13:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:48,577 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2020-10-13 23:13:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 23:13:48,578 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 147 [2020-10-13 23:13:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:48,579 INFO L225 Difference]: With dead ends: 234 [2020-10-13 23:13:48,579 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:13:48,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:13:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:13:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-10-13 23:13:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 23:13:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2020-10-13 23:13:48,592 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 147 [2020-10-13 23:13:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:48,592 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2020-10-13 23:13:48,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 23:13:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2020-10-13 23:13:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 23:13:48,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:48,594 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:48,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:13:48,594 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:48,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1240594903, now seen corresponding path program 33 times [2020-10-13 23:13:48,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:48,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529552138] [2020-10-13 23:13:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:53,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:53,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 23:13:53,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-13 23:13:53,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:53,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:13:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:13:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:13:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:13:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:54,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:13:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:13:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:13:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:13:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:13:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:13:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:54,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:13:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 23:13:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:54,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:13:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:54,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 18 proven. 1024 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:13:54,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529552138] [2020-10-13 23:13:54,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:54,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:13:54,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664187088] [2020-10-13 23:13:54,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:13:54,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:54,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:13:54,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:13:54,548 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand 36 states. [2020-10-13 23:13:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:54,921 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2020-10-13 23:13:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 23:13:54,922 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 149 [2020-10-13 23:13:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:54,924 INFO L225 Difference]: With dead ends: 236 [2020-10-13 23:13:54,924 INFO L226 Difference]: Without dead ends: 155 [2020-10-13 23:13:54,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:13:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-13 23:13:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2020-10-13 23:13:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 23:13:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-10-13 23:13:54,945 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 149 [2020-10-13 23:13:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:54,947 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-10-13 23:13:54,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-13 23:13:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-10-13 23:13:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 23:13:54,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:54,950 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:54,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:13:54,951 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1898842041, now seen corresponding path program 34 times [2020-10-13 23:13:54,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:54,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674447244] [2020-10-13 23:13:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 23:14:00,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:14:00,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:14:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:14:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:14:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:14:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:14:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:14:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:14:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:14:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:14:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:14:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:14:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:00,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 18 proven. 1089 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:14:00,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674447244] [2020-10-13 23:14:00,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:00,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 23:14:00,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703145810] [2020-10-13 23:14:00,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 23:14:00,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:00,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 23:14:00,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:14:00,871 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 37 states. [2020-10-13 23:14:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:01,184 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2020-10-13 23:14:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:14:01,184 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 151 [2020-10-13 23:14:01,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:01,186 INFO L225 Difference]: With dead ends: 238 [2020-10-13 23:14:01,186 INFO L226 Difference]: Without dead ends: 157 [2020-10-13 23:14:01,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:14:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-13 23:14:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-10-13 23:14:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 23:14:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2020-10-13 23:14:01,199 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 151 [2020-10-13 23:14:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:01,201 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2020-10-13 23:14:01,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-13 23:14:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2020-10-13 23:14:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 23:14:01,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:01,202 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:01,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:14:01,203 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:01,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1180818149, now seen corresponding path program 35 times [2020-10-13 23:14:01,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:01,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543072348] [2020-10-13 23:14:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:06,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:06,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 23:14:06,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 23:14:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:14:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:14:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:14:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:14:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:14:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:14:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:14:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:14:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:14:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:07,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:07,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:07,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:07,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:07,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 18 proven. 1156 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:14:07,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543072348] [2020-10-13 23:14:07,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:07,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 23:14:07,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739722259] [2020-10-13 23:14:07,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 23:14:07,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 23:14:07,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:14:07,298 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 38 states. [2020-10-13 23:14:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:07,617 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2020-10-13 23:14:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 23:14:07,618 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 153 [2020-10-13 23:14:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:07,620 INFO L225 Difference]: With dead ends: 240 [2020-10-13 23:14:07,620 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 23:14:07,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:14:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 23:14:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-10-13 23:14:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 23:14:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-10-13 23:14:07,634 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 153 [2020-10-13 23:14:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:07,634 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-10-13 23:14:07,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 23:14:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-10-13 23:14:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 23:14:07,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:07,636 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:07,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:14:07,636 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1501793795, now seen corresponding path program 36 times [2020-10-13 23:14:07,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:07,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9401966] [2020-10-13 23:14:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:12,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 23:14:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5273 [2020-10-13 23:14:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 23:14:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:14:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:14:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:14:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:14:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:14:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 23:14:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:13,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:14:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:13,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:14:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:13,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:14:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:13,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 23:14:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:13,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:13,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1549 backedges. 18 proven. 1225 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:14:13,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9401966] [2020-10-13 23:14:13,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:13,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 23:14:13,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676879975] [2020-10-13 23:14:13,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 23:14:13,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 23:14:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:14:13,912 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 39 states. [2020-10-13 23:14:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:14,322 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-10-13 23:14:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 23:14:14,323 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 155 [2020-10-13 23:14:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:14,325 INFO L225 Difference]: With dead ends: 242 [2020-10-13 23:14:14,325 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 23:14:14,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:14:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 23:14:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-10-13 23:14:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-13 23:14:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2020-10-13 23:14:14,344 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 155 [2020-10-13 23:14:14,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:14,344 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2020-10-13 23:14:14,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 23:14:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2020-10-13 23:14:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 23:14:14,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:14,346 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:14,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:14:14,346 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:14,347 INFO L82 PathProgramCache]: Analyzing trace with hash 721744289, now seen corresponding path program 37 times [2020-10-13 23:14:14,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:14,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744692267] [2020-10-13 23:14:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:14:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:20,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:20,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:14:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:14:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:14:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:14:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:14:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:14:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:14:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 23:14:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 23:14:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:20,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:20,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:20,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:20,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:14:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 18 proven. 1296 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:14:20,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744692267] [2020-10-13 23:14:20,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:20,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-13 23:14:20,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979557672] [2020-10-13 23:14:20,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-13 23:14:20,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:20,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-13 23:14:20,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:14:20,384 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 40 states. [2020-10-13 23:14:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:20,768 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2020-10-13 23:14:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 23:14:20,768 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 157 [2020-10-13 23:14:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:20,770 INFO L225 Difference]: With dead ends: 244 [2020-10-13 23:14:20,770 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 23:14:20,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:14:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 23:14:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2020-10-13 23:14:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-13 23:14:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-10-13 23:14:20,780 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 157 [2020-10-13 23:14:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:20,781 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-10-13 23:14:20,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-13 23:14:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-10-13 23:14:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 23:14:20,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:20,782 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:20,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:14:20,782 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1581521473, now seen corresponding path program 38 times [2020-10-13 23:14:20,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:20,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129460981] [2020-10-13 23:14:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:29,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:29,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 23:14:29,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9105 [2020-10-13 23:14:29,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:29,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-13 23:14:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 23:14:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:33,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:14:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:14:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:14:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:14:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:14:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:14:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:14:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:14:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 23:14:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:33,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:33,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 18 proven. 409 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2020-10-13 23:14:33,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129460981] [2020-10-13 23:14:33,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:33,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:14:33,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844703756] [2020-10-13 23:14:33,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:14:33,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:33,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:14:33,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:14:33,119 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 21 states.